Wire-strap fastener



March 29 1927.

E. F. MURDOCK WIRE STRAP FASTENER Filed Aug. 29. 1925 INVENTOR' Patented Mar. 29, 1927.

PATENT OFFICE.

EDWIN F. MURDOGK, OF NEW YORK, N. Y.

WIRE-STRAP FASTENER.

Application filed August 29, 1925.

Among the principal objects which the present invention has in view are to provide a fastener for the ends of round wire reinforcing strap lengths; to produce a flattened fastening; to en'iploy straight ended strap wires; and to provide fastening devices structurally connected for convenient feeding thereof.

Drawe'n gs.

Figure 1 is a top view of a round wire strap for reinforcing shipping crates and similar articles, the ends of said strap being held by afastener constructed and arranged in accordance with the present invention.

Figure 2 is a side edge view thereof, the strap being separated and contracted.

Figure 3 is a fiat side view of a fastener constructed in accordance with the present invention ready for use.

Figure 4 is an end View thereof.

Figure 5 is a flat side View of assembled fastening devices before the same are disconnected.

Figure 6 is a modified form thereof.

Description.

As shown in the drawings, the straps 11 are straight sections of round wire, the ends whereof are as severed from the reel from which the sections are out. These ends are extended through the convolutions of the fastener 12.

As seen best in Figure 4 of the drawings, the fasteners 12 are preferably wound upon a mandrel or other shaper to form flat convolutions, the passage therethrough having one dimension substantially equal to the dimension of the strap 11, while the opposite diameter is equal to two or more diameters of the said strap. Suitably tensioning tools are employed for thrusting the ends of the strap 11 through the fastener 12 and for stretching the strap around the crate or package with which it is being applied. lVhile the tension on the strap is maintained, the fastener 12 is mashed or flattened corrugating the lapped ends of the strap between the convolutions of the said Serial No. 53,248.

fastener.- This arrangement is best seen in Figure 2 of the drawings. It will then be found that the ends of thestrap 11 are firmly held.

The fasteners 12 are preferably manufactured in connected form substantially as shown in Figure 5 of thedrawings. Elongated belts of the fasteners are provided in such shape that the fasteners may be out off or severed one from another as and when used. If preferred, the ends of the strap 11 may be placed through the convolutions of the uppermost fastener of the belt to be then crushed prior to severing it from the belt.

In Figure 6 of the drawings a modified form of the belt is shown, the modification consisting in providing the mashed or abraided sections 13 which facilitate the breaking or parting of each of the fasteners from the belt by manipulating them with the hands or fingers.

It will be noted from the above that the fasteners 12 may be constructed of different quality and size to the wire strapping. Thus the fastener may be of relatively soft or hard wire as the case may be without altering the weight I or hardness of the strapping.

Claims.

1. A separable fastener for the free ends of round wire straps said fastener comprising a flattened helical section the convolutions whereof are spaced apart and form a transversely elongated passage therethrougn, the short diameter of said passage approximating the width of the strap to be secured thereby, and the longer diameter of said passage being approximately twice the diameter of said strap.

2. A separable fastener for the free ends of round wire strapssaid fastener comprising a belt of rbund wire strap fasteners, said belt embodying a seriessof short flattened heli -al sections the convolutions whereof are spaced apart, said sections being connected in substantially parallel relation and adapted to be used, successively, said sections having severing spaces therebetween.

.EDWIN F. MURDOCK. 

